题目内容
计算:46×
.
| 44 |
| 45 |
46×
,
=(1+45)×
,
=1×
+45×
,
=
+44,
=44
.
| 44 |
| 45 |
=(1+45)×
| 44 |
| 45 |
=1×
| 44 |
| 45 |
| 44 |
| 45 |
=
| 44 |
| 45 |
=44
| 44 |
| 45 |
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